DTC P0604: Internal Control Module Random Access Memory (RAM) Error: Procedure
- CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P0604)
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- Turn the Techstream on.
- Clear the DTC.
- Turn the engine switch off.
- Disconnect the battery negative terminal and wait for 1 minute.
- Connect the battery negative terminal.
- Turn the engine switch on (IG).
- Wait 16 seconds or more.
- Turn the Techstream on.
- Enter the following menus: Powertrain / Engine / Trouble Codes.
- Read the DTCs.
Result
Display (DTC output) Proceed to P0604 A No output DTC B
B → CHECK FOR INTERMITTENT PROBLEMS
A → See step 2
- REPLACE ECM. Refer to REMOVAL